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Material with schemochrome and capable of being induced to change color through stress and preparation method of material

A structural color and stress technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as harsh conditions, long time consumption, and high temperature

Active Publication Date: 2015-12-23
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have disadvantages such as time-consuming, high temperature, and harsh conditions. In order to realize the wide application of structural color materials, it is very important to actively seek low-cost, simple and convenient, bright colors, environmentally friendly, and continuous preparation of structural color dyeing technologies.

Method used

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  • Material with schemochrome and capable of being induced to change color through stress and preparation method of material
  • Material with schemochrome and capable of being induced to change color through stress and preparation method of material
  • Material with schemochrome and capable of being induced to change color through stress and preparation method of material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] (1) Preparation of core-shell polymer microsphere dispersion

[0026] Under an inert atmosphere, add a pre-emulsion containing 0.18g sodium lauryl sulfate, 0.4g 1,4-butanediol diacrylate, 3.6g styrene, and 217g deoxygenated water to a 1L flask. rise to 75°C. Gradually add 50mg sodium bisulfite, 350mg sodium persulfate, 50mg sodium bisulfite to initiate the reaction. Then, the prepared pre-emulsion of 6.6g of 1,4-butanediol diacrylate, 59.4g of styrene, 0.3g of sodium lauryl sulfate, 0.1g of potassium hydroxide and 90g of deoxygenated water was slowly added dropwise. After it dripped off, 100 mg of sodium persulfate was added. After 10 minutes, a uniformly dispersed pre-emulsion of 3.0 g allyl methacrylate, 27.0 g methyl methacrylate, 0.15 g sodium lauryl sulfate and 40 g deoxygenated water was slowly added dropwise. After it has been completely dripped, slowly add a uniformly dispersed pre-emulsion of 130g of ethyl acrylate, 0.33g of sodium lauryl sulfate and 139g of...

Embodiment 2

[0030] (1) Preparation of core-shell polymer microsphere dispersion

[0031]Under an inert atmosphere, add a pre-emulsion containing 25 mg of sodium lauryl sulfate, 0.1 g of 1,4-butanediol diacrylate, 0.9 g of styrene, and 54 g of deoxygenated water into a 250 mL flask, and gradually raise the temperature under vigorous stirring. to 75°C. Gradually add 12.5 mg sodium bisulfite, 87.5 mg sodium persulfate, 12.5 mg sodium bisulfite to initiate the reaction. Then, the prepared pre-emulsion of 1.65g of 1,4-butanediol diacrylate, 14.85g of styrene, 75mg of sodium lauryl sulfate, 25mg of potassium hydroxide and 22.5g of deoxygenated water was slowly added dropwise. After it dripped off, 25 mg of sodium persulfate was added. After 10 minutes, a uniformly dispersed pre-emulsion of 0.75 g of allyl methacrylate, 6.75 g of methyl methacrylate, 37.5 mg of sodium lauryl sulfate and 10 g of deoxygenated water was slowly added dropwise. After it has been completely dripped, slowly add a un...

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Abstract

The invention belongs to the technical field of intelligent materials and particularly provides a material with schemochrome and capable of being induced to change color through stress and a preparation method of the material. According to the method, dispersion liquid of a polymeric microsphere of a core-shell structure provided with a hard inner core and a soft outer shell serves as treating liquid, objects of various shapes and materials serve as substrates, the surfaces of the objects are coated with the dispersion liquid of the polymeric microsphere in a dipping mode, the objects with the schemochrome are obtained, and the color can be changed according to the external environment, such as the stress change. The color change is fast and reversible, the whole visible light region, even the ultraviolet and infrared spectral region can be included. The material with the schemochrome and capable of being prepared simply, fast and in batches can be used in the field of displays, sensitive materials and textile industries, for example, photonic crystal fibers prepared with elastic fibers as substrates can be woven into fabric bright in color, and by means of the fabric, color change in the movement process can be achieved.

Description

technical field [0001] The invention belongs to the technical field of intelligent materials, and in particular relates to a material with structural color and stress-induced discoloration and a preparation method thereof. Background technique [0002] The colors in nature are rich and colorful, and there are various ways to produce colorful colors, which can be roughly divided into pigment colors (chemical colors) and structural colors (physical colors). The vast majority of colors are derived from the effect of pigment color, which is the principle that substances absorb certain wavelengths and reflect other light waves to display various colors. In order to give objects a certain color, traditional dyeing techniques usually use inorganic or organic dyes of various colors as dyeing agents. There are inevitably a large number of metal ions or toxic and harmful compounds in the dyeing process. These pollutants are harmful to human life. There is a great negative impact on t...

Claims

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Application Information

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IPC IPC(8): G02F1/00
CPCG02F1/0072
Inventor 彭慧胜孙雪梅张静
Owner FUDAN UNIV
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